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- What are the HTTP response status codes?
- HTTP is an application layer protocol, although the HTTP/2 version was launched in 2015 and is supported by major web browsers and web servers. Its main features can be summarized as follows: Supports client/server model. Simple and fast: When a client requests a service from the server, it only needs to transmit the request method and path. Due to the simplicity of the HTTP protocol, the program size of the HTTP server is small and the communication speed is very fast. Flexible: HTTP allows the transmission of any type of data object. The type being transferred is marked by Content-Type. No connection: The meaning of no connection is to limit each connection to only process one request. After the server processes the client's request and receives the client's response, it disconnects. In this way, you can save
- Safety 2928 2023-05-16 08:37:05
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- How to avoid weak encryption in C language
- 1. Weak encryption Encryption refers to using a special algorithm to change the original information data, so that even if unauthorized users obtain the encrypted information, they still cannot understand the content of the information because they do not know the decryption method. Common encryption algorithms can be mainly divided into: symmetric encryption, asymmetric encryption, and one-way encryption. Various encryption algorithms are used in different scenarios. Choose the appropriate algorithm based on the characteristics of the encryption algorithm, such as computing speed, security, and key management methods. However, security is an important indicator to measure the quality of the encryption algorithm. Encryption that is easily cracked Algorithms are called weak encryption algorithms, such as the DES algorithm that can be cracked in a limited time using exhaustive methods. This article takes the JAVA language source code as an example to analyze the causes of weak encryption and how to repair it. 2. The danger of weak encryption
- Safety 1699 2023-05-16 08:19:12
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- How to Analyze Code Auditing in Java Web Security
- 1. JavaWeb Security Basics 1. What is code auditing? In layman’s terms, Java code auditing is to discover security issues in the Java application itself by auditing Java code. Since Java itself is a compiled language, even if there are only class files We can still audit Java code. For uncompiled Java source code files, we can read the source code directly, but for compiled class or jar files, we need to decompile them. Java code auditing itself is not very difficult. As long as you are proficient in the auditing process and common vulnerability auditing techniques, you can complete the code auditing work relatively easily. But the way of Java code auditing is not just to use
- Safety 2118 2023-05-16 08:04:21
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- How to expand disk space of xen virtual machine
- With the extensive use of virtualization technology, there are more and more ideas about using virtualization, such as directly expanding the disk space. In this case, I recommend adding a new disk, which is consistent with the normal use of physical machines. There is another way to increase disk space, which is to directly expand the space of the existing disk. This method is used in this article. 1. View the virtual machine configuration file xmlist2.dd2. The virtual machine uses /data/dd2.img3. Directly expand the existing virtual disk space. Now view the virtual machine disk file size ll-h directly expand the virtual machine disk file ddif=/dev/sdb1bs= 1024Mcount=4>>/data/dd2.img has been expanded
- Safety 1905 2023-05-15 22:55:13
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- How to perform Apache Struts2 S2-057 remote code execution vulnerability analysis
- Preface The Apache Struts framework is an open source project based on the Web application framework of JavaServlets, JavaBeans, and JavaServerPages (JSP). Struts is based on the Model-View-Controller (MVC) design pattern and can be used to build complex Web applications. It allows us to decompose the code of an application's business logic, control logic and presentation logic, making it more reusable and maintainable. The Struts framework is part of the Jakarta project and is managed by the Apache Software Foundation. Tianrongxin Alpha Lab will bring you ApacheStruts2S2-057
- Safety 2059 2023-05-15 21:43:04
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- How to configure Cisco Catalyst 4948 for CNA management
- Prepare the Catalyst4500 switch for CNA. Switch switch restore to factory default recovery command switch>enableswitch#erasestartup-configswitch#reload. If you want the switch to be managed by CNA, the following two conditions must be met at the same time: Have a network management IP address. Configure IPSwitch for g1/1 port#configureSwitch(config)#interfacegigabitEthernet1/1Switch(config-if)#noswitchportSwitch(config-if)#ipaddres
- Safety 961 2023-05-15 21:28:04
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- How nmap hides itself from scanning
- 192.168.1.216 is a zombie, 192.168.1.212 is the scanned end nmap-sn192.168.1.0/24 scans the online host nmap-Pn-sI192.168.1.216192.168.1.212 (-Pn hides itself, -sIidlescan) IDS can only detect When scanning 192.168.1.216 on 192.168.1.212, the scan of the nmap host cannot be detected.
- Safety 1470 2023-05-15 21:22:16
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- How to analyze Drupal configuration
- Drupal configuration Drupal is an open source PHP content management system with a fairly complex architecture. It also has a strong security model. Thanks to the contributions and maintenance of developers in the community, there is a lot of detailed documentation and methods for strengthening the security configuration of Drupal websites. Remember, Drupal is required to run your website. To protect the entire system from hackers, we need to deal with the entire system. It includes some common server settings, configuration of web servers, PHP and databases. Additionally, any other services on the server need to be configured correctly. It provides tips and key points that can help server and website administrators audit the security of their entire system. We should understand that creating an absolute
- Safety 1003 2023-05-15 21:22:11
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- What are the five sql injections of piwigo v2.9.5?
- 0x0 project introduction project address: https://github.com/Piwigo/Piwigo project introduction: piwigo is an open source photo studio software for the Internet. Designed for organizations, teams and individuals to manage your photo library. Official website address: piwigo.org0x1 Preparation Download under Linux https://github.com/Piwigo/Piwigo/archive/2.9.5.zip Unzip, empower, enter the directory and use docker to install: dockerrun-d--namepiwigo_mysql-eMYSQL_DATABASE =piwigo-eMYSQ
- Safety 1033 2023-05-15 20:55:10
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- How to set up the win10 system to run the software with administrator rights
- In the process of using the win10 system, we often encounter permission problems with some software. At this time, we need to run the software normally as an administrator. However, some users find that our win10 system does not have administrator permissions. What about the options to run the software? The specific method is as follows: 1. Right-click this computer on the desktop, which is My Computer, and select "Manage"; 2. Expand to Computer Management → System Tools → Local Users and Groups → Users, find and open Administrator on the right; 3. In the Administrator properties interface, uncheck "Account is disabled" and click OK; 4. After you complete the above settings, when you run the win0 software
- Safety 5176 2023-05-15 20:55:04
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- How to use the XtraGrid scroll wheel to turn pages
- Scroll wheel page turning and transmission page turning are more convenient. After some discussion and consideration, I finally implemented mouse wheel page turning in XtraGrid's GridView. I created a new component that inherits the original GridControl, and added an ImageList to the component to store some resource images. Used to achieve the effect of dynamic graphics. Add a custom delegate parameter and enumeration. The delegate parameters are used to pass paging information. publicclassPagingEventArgs:EventArgs{publicintPageSize{get;set;}publicintPageIndex{get;set;}}publ
- Safety 1098 2023-05-15 20:43:09
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- How to set up IDA Chinese encoding
- File directory: cfg/ida.cfg Comment out (AsciiStringChars in cp866version) //(cp866version)//AsciiStringChars=Uncomment (AsciiStringChars in fullversion) //(fullversion)AsciiStringChars=In the disassembly code page, Alt+A will changeencodingsetdefaultencodings to utf-8 encoding
- Safety 2032 2023-05-15 19:01:04
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- Example analysis of linkage between CobaltStrike and Metasploit
- Look for Ms08067. I personally feel that CobaltStrike’s graphical interface and rich functions are a super powerful post-exploitation framework, especially for the convenience of managing various data and shells collected during lateral movement. However, it is difficult to exploit vulnerabilities and initial breakthroughs. It is very weak; on the other hand, Metasploit is a vulnerability exploitation framework, EXP is extremely smooth, and has various modules, including scanning, breakthrough, and expansion one-stop services, but it is a bit weak for the management of multiple shells (after all, there is no graphics There are too many commands to remember). Therefore, how to effectively link the two frameworks has become the knowledge I want to learn today. 1. Use CS to serve MSF and use Beaco of CS
- Safety 1301 2023-05-15 18:58:11
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- Struts2-057 two versions of RCE vulnerability example analysis
- Foreword On August 22, 2018, Apache Strust2 released the latest security bulletin. Apache Struts2 has a high-risk remote code execution vulnerability (S2-057/CVE-2018-11776). The vulnerability was discovered by ManYueMo, a security researcher from the SemmleSecurityResearch team. This vulnerability is due to the fact that when using the namespace function to define XML configuration in the Struts2 development framework, the namespace value is not set and is not set in the upper-layer action configuration (ActionConfiguration) or a wildcard namespace is used, which may lead to remote code execution. In the same way, u
- Safety 1695 2023-05-15 18:46:06
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- How to conduct Google Play malware analysis
- Multiple malicious applications were recently discovered on Google Play (detected by TrendMicro as AndroidOS_BadBooster.HRX) that are capable of accessing remote malvertising configuration servers, conducting ad fraud, and downloading up to 3,000+ malware variants or malicious payloads. These malicious apps improve device performance by cleaning, organizing and deleting files and have been downloaded more than 470,000 times. The campaign has been active since 2017, and Google Play has removed the malicious apps from the store. According to the analysis, 3,000 malware variants or malicious payloads are downloaded to devices, disguised as device launchers or system icons that do not display in the program list.
- Safety 994 2023-05-15 18:16:21
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